EUVD-2026-93500
GHSA-pj7x-6wpf-pgvp
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-reachable query API with low complexity, but requires an authenticated low-privilege account with collection write access (PR:L); SQLi yields high confidentiality and integrity impact with no availability effect.
Primary rating from Vendor (GitHub_M).
CVSS VectorVendor: GitHub_M
Lifecycle Timeline
4DescriptionCVE.org
Payload is a free and open source headless content management system. Prior to 3.90.0 and 4.0.0-canary.34, an attacker with read and create or update access to a collection containing a json field or a blocks field with blocksAsJSON enabled can inject SQL through a crafted field path and operators. Collections without those fields are not affected, and richText fields are not affected. The SQLite packages are fixed in versions 3.90.0 and 4.0.0-canary.34, and the Postgres packages are fixed in version 3.73.0.
Articles & Coverage 1
AnalysisAI
Authenticated SQL injection in Payload CMS allows a user holding read plus create or update permission on a collection that contains a json field - or a blocks field with blocksAsJSON enabled - to inject arbitrary SQL through crafted field paths and query operators when the site runs on the Postgres or SQLite database adapters. Only collections carrying those specific field types are reachable; collections built purely from text and richText fields are explicitly not affected, and richText fields themselves are not exploitable. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires ALL of: (1) an affected Payload collection that contains a json field, OR a blocks field with blocksAsJSON explicitly enabled - collections without these are not affected and richText fields are explicitly not affected; (2) a backing database using the vulnerable adapters (@payloadcms/db-postgres, db-vercel-postgres, db-sqlite, or db-d1-sqlite); and (3) an authenticated principal with read AND create-or-update access to that collection (matching CVSS PR:L). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine high-severity authenticated SQL injection (CWE-89) with a moderate-but-real exploitation barrier rather than an inflated high-CVSS score. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patches are available and should be applied immediately: upgrade both @payloadcms/db-sqlite and @payloadcms/db-d1-sqlite to 3.90.0 (or 4.0.0-canary.34 if tracking the canary line), and upgrade @payloadcms/db-postgres and @payloadcms/db-vercel-postgres to 3.73.0, along with the matching core payload release; the fix is delivered by commit 03b78c7e0901d19c67f07bdf6396a276010adbcc and documented in the GitHub advisory GHSA-pj7x-6wpf-pgvp and release v3.90.0. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory every Payload CMS deployment and identify which instances run the Postgres or SQLite adapters and expose collections containing json fields or blocks fields with blocksAsJSON enabled, treating those as the priority set; review database and application audit logs for anomalous query patterns or unexpected create/update activity from accounts holding read plus create or update permissions on those collections. …
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External POC / Exploit Code
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